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FAIR VALUE MEASUREMENTS (Tables) | 12 Months Ended
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Sep. 30, 2025
Fair Value Disclosures [Abstract] |
Schedule of Assets and Liabilities Measured at Fair Value | The following table presents the recurring assets and liabilities measured at fair value as of September 30, 2025 and September 30, 2024 in accordance with the fair value hierarchy:
| September 30, 2025 |  | September 30, 2024
(in thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |  |  |  |  |
Cash equivalents | $ | 422,292 |  |  | $ | — |  |  | $ | — |  |  | $ | 265,077 |  |  | $ | — |  |  | $ | — |
Schedule of Estimated Fair Value of Financial Instruments Not Carried at Fair Value | The estimated fair value of financial instruments not carried at fair value in the consolidated balance sheets were as follows:
|  | September 30, 2025 |  | September 30, 2024
(in thousands) |  | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
New Senior Secured Term Loan Facility due September 29, 2032 |  | $ | 373,000 |  |  | $ | 371,135 |  |  | $ | 373,000 |  |  | $ | 373,000 |
Senior Notes due June 2031 |  | 400,000 |  |  | 373,164 |  |  | 400,000 |  |  | 364,456 |
Total debt |  | $ | 773,000 |  |  | $ | 744,299 |  |  | $ | 773,000 |  |  | $ | 737,456 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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